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Stamens 70-900, bases connate into short tube; filaments connate into 5-10 distinct phalanges, alternating with petals; anthers reniform.

雄蕊70-900，基部进筒部；花丝合生成为5-10离生的雄蕊束，与花瓣互生的；花药肾形。

Phytosociological description of vegetation has always been found on field sampling alternating with studies of the releves at home.

植被的群落学描述已经常以野外抽样为基础来取代室内样地记录的研究。

Male flowers: sepals 5, imbricate; petals 5, longer than sepals; disk absent; stamens [5 or]10 and 2-seriate, inserted on fleshy receptacle, outer ones alternating with petals, inner ones sometimes absent or reduced and scalelike; filaments free; anthers longitudinally dehiscent, 2-loculed; pistillode present.

雄花： 萼片5，覆瓦状；花瓣5，比萼片长；花盘无；雄蕊 [5或者 ]10 和2轮，着生于肉质花托，外轮与花瓣互生，内轮有时无或退化成鳞片状；花丝离生花药纵向开裂，2室；退化雌蕊宿存。

A range of oligoaryls having alternating para- or meta-benzene-furan rings is synthesized by rapid convergent/divergent method from the annlation of a propargylic dithioacetal and an aldehyde having a propargylic dithioacetal moiety as the substituent.

中文摘要结合分流法/汇集法，利用炔丙基硫缩酮单体和另一具有醛基的单体进行环化反应，可以迅速合成对位及间位取代苯环呋喃交错寡聚物。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used.

为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used. By analyzing the time-step splitting principle, the ADI-PSTD method is therefore simplified.

摘 要：为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

It had three distinct phases with alternating fortunes, such as the crushing Roman defeat at Caudine Forks (321 BC), until Rome won the definitive victory at Sentinum (295 BC) against a coalition that also included Etruscans and Senones, a Gallic tribe.

其间有三个阶段双方互有优势，象（前321年）罗马在CAUDINE FORKS的大溃败，以及（前295年）罗马在斯提那获得对还有伊特鲁里亚人和高卢部族塞罗尼人参加的一个联盟的最终胜利。

In a normal alternating current power system, the voltage varies sinusoidally at a specific frequency, usually 50 or 60 hertz.

在一个正常的交流电力系统，正弦电压变化在特定的频率，通常是50或60赫兹。

A progressive sequence of dies for forming a cavity having a desired length, width and depth, comprising: a plurality of extendable punches, each with an impact surface, said impact surfaces alternating between a first desired pattern comprising a plurality of piercing points and a second desired pattern comprising an essentially flat surface, the length and width of each said impact surface approximately equal to the desired length and width of said cavity; a die body including a plurality of apertures adapted to receive each said punch; an opposing post positioned within each said aperture having an impact surface congruent with each said impact surface; and at least one moveable forming bushing supported by at least one forming bushing actuator slideably engaged to each said opposing post.

形成有被需要的长度、宽度和深度的一个洞的一钢模的前进序列，包含：一个可扩充打洞器的多数，每个与一个冲击表面，说冲击升至水面交互的在组成一个刺骨点的多数的一个首先需要的式样之间而且秒需要了组成一个本质上平坦的表面、长度的式样，而且每个的宽度对被需要的长度和说的洞宽度说大约相等的冲击表面；一个包括一个孔的多数一钢模身体适应接受每个说打洞器；放置在每个里面的反对职位说孔让一种冲击升至水面适合的与每个说冲击表面；而且至少被可滑动地每个被预订到的至少一个形成桥衬主动器支援的一个家具形成桥衬说反对职位。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。